Current pain and headache reports
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Neuropathic low back pain is examined from a structural standpoint, distinguishing processes that start from chronic inflammation and mechanical compromise and cross into the realm of neuropathy with primary neurogenic pathophysiology. The disease of chronic pain is discussed, examining peripheral and central changes in neuroanatomy, neurophysiology, and neuromolecular dynamics. The limitations of inadequate random controlled trials regarding long-term pharmacologic interventions are contrasted with excellent work in the basic science of chronic pain. Complex rational pharmacologic strategies for structural pathology, central pain processes, sites of medication action, and differing routes of administration are delineated.
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Pseudomigraine with temporary neurologic symptoms and lymphocytic pleocytosis is a self-limited syndrome of unknown origin characterized by headache accompanied by transient neurologic symptoms and cerebrospinal fluid lymphocytosis. Patients with this condition are between 15 and 40 years of age. The syndrome is more frequent in men. ⋯ Single photon emission computed tomography reveals transient focal areas of decreased uptake consistent with the clinical symptoms. It is possible that pseudomigraine with temporary neurologic symptoms and lymphocytic pleocytosis could result from an activation of the immune system secondary to a recent viral infection, which would produce antibodies against neuronal or vascular antigens. This autoimmune attack may induce an aseptic leptomeningeal vasculitis, accounting for the headache and the transient symptoms likely through a spreading depression-like mechanism.
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New imaging technology allows us to study neurologic disorders that have had no previous structural basis. There have been recent reports on the involvement of nociceptive pathways in daily headache. A systematic review was performed using key words "chronic daily headache" and "imaging." This paper reviews the literature on imaging studies performed on daily headache with emphasis on the new imaging technology.
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Curr Pain Headache Rep · Jun 2003
ReviewIs there a role for botulinum toxin in the treatment of migraine?
In this review, the studies and case reports that are available from reference systems and published congress contributions on the treatment of migraine with botulinum toxin are evaluated. The studies and reports were analyzed with respect to the study design, the efficacy parameters, and the significance of results. ⋯ As a result of this analysis, there is no sufficient scientific evidence for a treatment recommendation of migraine with botulinum toxin. Further studies are needed for a definite evaluation of subgroups with probable benefit from such a treatment and for the comparison of botulinum toxin with other migraine prophylactic drugs.